ControllerTest: cleaning up un-used imports

src/test/java/net/floodlightcontroller/core/internal/ControllerTest.java

@@ -48,7 +48,6 @@ import net.floodlightcontroller.packet.ARP;
 import net.floodlightcontroller.packet.Ethernet;
 import net.floodlightcontroller.packet.IPacket;
 import net.floodlightcontroller.packet.IPv4;
-import net.floodlightcontroller.packetstreamer.thrift.OFMessageType;
 import net.floodlightcontroller.perfmon.IPktInProcessingTimeService;
 import net.floodlightcontroller.perfmon.PktInProcessingTime;
 import net.floodlightcontroller.restserver.IRestApiService;
@@ -59,7 +58,6 @@ import net.floodlightcontroller.test.FloodlightTestCase;
 import net.floodlightcontroller.threadpool.IThreadPoolService;
 
 import org.jboss.netty.channel.Channel;
-import org.jboss.netty.channel.ChannelHandler;
 import org.jboss.netty.channel.ChannelStateEvent;
 import org.junit.Test;
 import org.openflow.protocol.OFError;
@@ -71,7 +69,6 @@ import org.openflow.protocol.OFPhysicalPort;
 import org.openflow.protocol.OFPort;
 import org.openflow.protocol.OFStatisticsReply;
 import org.openflow.protocol.OFType;
-import org.openflow.protocol.OFError.OFBadActionCode;
 import org.openflow.protocol.OFError.OFBadRequestCode;
 import org.openflow.protocol.OFError.OFErrorType;
 import org.openflow.protocol.OFPacketIn.OFPacketInReason;